From: Vijay Sundar Selvamani <vijay.sundar.selvamani@xxxxxxxxx>
Add a new performance counter that measures the average ring buffer idle
duration.
This metric is now included in the telemetry counters exposed via
debugfs for QAT GEN6 devices.
Update the documentation to reflect the new idle duration counter
Co-developed-by: George Abraham P <george.abraham.p@xxxxxxxxx>
Signed-off-by: George Abraham P <george.abraham.p@xxxxxxxxx>
Signed-off-by: Vijay Sundar Selvamani <vijay.sundar.selvamani@xxxxxxxxx>
Signed-off-by: Suman Kumar Chakraborty <suman.kumar.chakraborty@xxxxxxxxx>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
---
Documentation/ABI/testing/debugfs-driver-qat_telemetry | 1 +
drivers/crypto/intel/qat/qat_common/adf_gen6_tl.c | 8 ++++++++
drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h | 1 +
3 files changed, 10 insertions(+)
diff --git a/Documentation/ABI/testing/debugfs-driver-qat_telemetry b/Documentation/ABI/testing/debugfs-driver-qat_telemetry
index 0dfd8d97e169..53abf9275147 100644
--- a/Documentation/ABI/testing/debugfs-driver-qat_telemetry
+++ b/Documentation/ABI/testing/debugfs-driver-qat_telemetry
@@ -57,6 +57,7 @@ Description: (RO) Reports device telemetry counters.
gp_lat_acc_avg average get to put latency [ns]
bw_in PCIe, write bandwidth [Mbps]
bw_out PCIe, read bandwidth [Mbps]
+ re_acc_avg average ring empty time [ns]
at_page_req_lat_avg Address Translator(AT), average page
request latency [ns]
at_trans_lat_avg AT, average page translation latency [ns]
diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen6_tl.c b/drivers/crypto/intel/qat/qat_common/adf_gen6_tl.c
index cf804f95838a..633b0c05fbdb 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_gen6_tl.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_gen6_tl.c
@@ -57,6 +57,10 @@ static const struct adf_tl_dbg_counter dev_counters[] = {
/* Maximum uTLB used. */
ADF_TL_COUNTER(AT_MAX_UTLB_USED_NAME, ADF_TL_SIMPLE_COUNT,
ADF_GEN6_TL_DEV_REG_OFF(reg_tl_at_max_utlb_used)),
+ /* Ring Empty average[ns] across all rings */
+ ADF_TL_COUNTER_LATENCY(RE_ACC_NAME, ADF_TL_COUNTER_NS_AVG,
+ ADF_GEN6_TL_DEV_REG_OFF(reg_tl_re_acc),
+ ADF_GEN6_TL_DEV_REG_OFF(reg_tl_re_cnt)),
};
/* Accelerator utilization counters */
@@ -122,6 +126,10 @@ static const struct adf_tl_dbg_counter rp_counters[] = {
/* Payload DevTLB miss rate. */
ADF_TL_COUNTER(AT_PAYLD_DTLB_MISS_NAME, ADF_TL_SIMPLE_COUNT,
ADF_GEN6_TL_RP_REG_OFF(reg_tl_at_payld_devtlb_miss)),
+ /* Ring Empty average[ns]. */
+ ADF_TL_COUNTER_LATENCY(RE_ACC_NAME, ADF_TL_COUNTER_NS_AVG,
+ ADF_GEN6_TL_RP_REG_OFF(reg_tl_re_acc),
+ ADF_GEN6_TL_RP_REG_OFF(reg_tl_re_cnt)),
};
void adf_gen6_init_tl_data(struct adf_tl_hw_data *tl_data)
diff --git a/drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h b/drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h
index 11cc9eae19b3..9efab3f76a3f 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h
+++ b/drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h
@@ -17,6 +17,7 @@ struct adf_accel_dev;
#define LAT_ACC_NAME "gp_lat_acc_avg"
#define BW_IN_NAME "bw_in"
#define BW_OUT_NAME "bw_out"
+#define RE_ACC_NAME "re_acc_avg"
#define PAGE_REQ_LAT_NAME "at_page_req_lat_avg"
#define AT_TRANS_LAT_NAME "at_trans_lat_avg"
#define AT_MAX_UTLB_USED_NAME "at_max_tlb_used"
--
2.40.1
